- Japanese: はがねのこうら
- Romaji: Hagane no Koura
Boosts the power of shelled monsters. Said to have no effect on those without shells.
こうらパワーでパワーアップ こうらを もたないものには こうかがないという
This card can be won by defeating these characters a specific number of times, the number of wins needed, is listed in the milestone column.
This card can be won from the following characters. The chance of winning it is listed as a percentage and a probability out of 2048.